The Dell Latitude E5250 Laptop Comes in 2 Different Drive Options from Dell and Supports Single Drive Configuration Only. (One 2.5" Solid State Drive or Hard Drive) or (One mSATA Solid State Drive in a Adapter Caddy) Note: When a mSATA Drive is installed, the mSATA Drive occupies the 2.5" Drive bay using a adapter caddy. If replacing the mSATA Drive for a 2.5" Drive, you will need the 2.5" Drive caddy p/n GY92H and cable p/n HGJHP for installation. If replacing the 2.5" Drive for a mSATA Drive, you will need the mSATA adapter caddy p/n 35DXP and connector p/n 8JFFG for installation.